Electricity: measuring and testing – Particle precession resonance – Determine fluid flow rate
Reexamination Certificate
2009-04-15
2011-10-04
Arana, Louis (Department: 2858)
Electricity: measuring and testing
Particle precession resonance
Determine fluid flow rate
C324S309000
Reexamination Certificate
active
08030919
ABSTRACT:
Systems, methods, and other embodiments associated with controlling a magnetic resonance imaging (MRI) apparatus to perform a balanced steady state free precession (bSSFP) technique that includes magnetization preparation with differentiated velocity encoding and spoiling residual transverse magnetization are described. The example systems, methods, and other embodiments are also associated with acquiring a dark blood image in response to the bSSFP technique. A dark blood image is one in which NMR signal acquired from an object subjected to the bSSFP technique and magnetization preparation includes NMR signal from flowing spins and NMR signal from non-flowing spins in a desired ratio.
REFERENCES:
patent: 4609872 (1986-09-01), O'Donnell
patent: 7208950 (2007-04-01), Deimling
patent: 2009/0315559 (2009-12-01), Herzka et al.
Derakhshan Jamal J.
Duerk Jeffrey L.
Griswold Mark A.
Nour Sherif G.
Sunshine Jeffrey L.
Arana Louis
Case Western Reserve University
Kraguljac & Kalnay LLC
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